/Engine/Source/Runtime/Engine/Classes/EdGraph/EdGraphSchema.h
Reorders this action to be before the other item in the parent container (returns false if they are not in the same container or cannot be reordered)
virtual bool ReorderToBeforeAction ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FEdGraphSchemaAction](API\Runtime\Engine\EdGraph\FEdGraphSchemaAction) > OtherAction )